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Minguzzite

Collectors Summary

Color grün, gelbgrün
Solubility ++ H2O
Crystal System monoklin, P21/c

Chemism

Chemical formula

K3Fe3+(C2O4)3·3H2O

Chemical composition

Eisen, Kalium, Kohlenstoff, Sauerstoff, Wasserstoff

Unit weight: 491.243942 u; Number of atoms in the formula: 31

Info

Empirical formula:

K3Fe(C2O4)3·3H2O

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Hydrogen

H

1.23

6

19.35

1.0079470

6.0476820

Carbon

C

14.67

6

19.35

12.0107800

72.0646800

Oxygen

O

48.85

15

48.39

15.9994300

239.9914500

Potassium

K

23.88

3

9.68

39.0983100

117.2949300

Iron

Fe

11.37

1

3.23

55.8452000

55.8452000

Analysis wt%

Ø Fe2O3 : 16.05, K2O : 26.00, C2O3 : 42.13, H2O : 12.95, FeO : 2.28 (Ref: Rend.Accad.Naz.Lincei,55)

Strunz 9th edition incl. updates

10.AB.25

10: Organische Verbindungen
A: Salze organischer Säuren
B: Oxalate
25:Minguzzit-Gruppe

Lapis Classification

IX/A.01-060

IX: ORGANISCHE VERBINDUNGEN
A: Salze organischer Säuren
1: Oxalate [C2O4] 2-

Classification by Hölzel

A.AA.340

A: ORGANIC COMPLEXES
A: Carbonacids and their Salts
A: Oxalates

Dana 8th edition

50.01.04.01

50: Organic Minerals
01: Salts of Organic Acids (Oxalates)

IMA status

Erstbeschreibung vor CNMNC-Gründung (1959), als Mineral meist anerkannt

Mineral status

anerkanntes Mineral

Optical Properties

Color

grün, gelbgrün

max. Birefringence

0.096

Birefringence chart\! Minguzzite title=Birefringence chart Minguzzite

Michel-Levy Color Chart viewed according to the maximum birefringence (at 30μm). Mineral color is not taken into account. Click on the image to enlarge or change thickness.

RI value α / ω / n

1.500

RI value β

1.555

RI value γ / ε

1.596

Ri mean

1.550

2V angle

Biaxial (-) 78°c

Crystallography

Crystal System

monoklin

Class (H-M)

2/m

Space Group number

14

Space Group

P21/c

Cell parameters a (Å)

:0.9916

Cell parameters b (Å)

:1

Cell parameters c (Å)

:0.3895

Cell parameters a/b or c/a

0.992

Cell parameters c/b

0.390

Cell parameters α

90°

Cell parameters β

94.23

Cell parameters γ

90°

Z

4

X-Ray Powder Diffraction

10.2(50),
6.9(100),
4.97(50),
3.62(70),
3.17(50),
3.04(40),
2.68(60),
2.18(70)

XRD chart Minguzzite

Calculated from d-spacing and intensity at 0.1541838 nm (Cu)

Crystals 3D

Open larger view

Crystal Structure 3D

Open larger view

Physical Properties

Density (g/cm³)

2.092 - 2.142 / Durchschnittlich = 2.11

Instability

++ H2O

Preface

Author (Name, Year)

Garavelli, 1955

References

Accademia Nazionale dei Lincei, Rendiconti, Classe di Scienze Fisiche, Matematiche, e Naturali 18 (1955), 392

Other languages

German

Minguzzit

Spanish

Minguzzita

French

Minguzzite

English

Minguzzite

CNMNC symbol

Symbol

Mzz

Locations with GPS information

IDs

GUSID (Global unique identifier short form) JOPFuz_73USmNticIs1x8g
GUID (Global unique identifier) BBC5E324-FB3F-44DD-A636-D89C22CD71F2
Database ID 2547